Validity and reliability--What's it all about? Part 1. Validity in quantitative studies.
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The Spanish translation and adaptation of the 17-item Scale extracted from the francophone extension of the AMPD scales, the AMPD-AT, has been filled out in 120 anxious, depressed and other psychiatric patients along with numerous other rating scales measuring anxiety (Hamilton, Zung, STAI, VAS), depression (Hamilton, VAS), and global psychopathology (AMPD-SY, CGI). The results point to a higher correlation with psychic anxiety than with somatic anxiety and with state anxiety than with trait anxiety. The correlations are lower with depression scales than with anxiety scales. The AMPD-AT shows as an special advantage the possibility to be used into the AMPD-System (in order to extract a score of anxiety in the context of a psychopathological profile) or independently as a scale of psychic anxiety.
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